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Odors Aloft
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Learners smell balloons filled with different scents to guess what's inside. From this, they infer the presence and motion of scented molecules.
Biochemistry Happens Inside of You!
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In this four-part activity, learners explore how the body works and the chemistry that happens inside living things.
The Nose Knows!
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In this activity on page 9 of the PDF, learners test how flavoring extracts move through the walls of a balloon.